Simultaneous Radio Frequency and Wideband Interference Suppression in SAR Signals via Sparsity Exploitation in Time-Frequency Domain

This paper addresses the problem of recovering a synthetic aperture radar (SAR) signal that is corrupted by both radio frequency interference (RFI) and wideband interference (WBI). The time-frequency domain is utilized for both the SAR signal and interference in the form of sparse representations. B...

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Bibliographic Details
Published in:IEEE transactions on geoscience and remote sensing 2018-10, Vol.56 (10), p.5780-5793
Main Authors: Liu, Hongqing, Li, Dong, Zhou, Yi, Truong, Trieu-Kien
Format: Article
Language:English
Subjects:
Apertures
Broadband
Computer simulation
Evaluation
Exploitation
Frameworks
Frequency domain analysis
Interference suppression
Joint estimation
Mathematical model
Optimization
Radio
Radio frequency
Radio frequency interference
radio frequency interference (RFI) and wideband interference (WBI) suppression
SAR (radar)
sparse representation
Synthetic aperture radar
synthetic aperture radar (SAR) signal recovery
Wideband
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Summary:This paper addresses the problem of recovering a synthetic aperture radar (SAR) signal that is corrupted by both radio frequency interference (RFI) and wideband interference (WBI). The time-frequency domain is utilized for both the SAR signal and interference in the form of sparse representations. By doing so, a unified framework that allows one to suppress both the RFI and WBI while recovering the SAR signal can be developed. The resulting framework is an optimization problem that is efficiently solved using a customized alternating direction method of multipliers approach. Finally, simulation results are provided to demonstrate that the performance of the joint estimation algorithm is superior to the performances of other methods in terms of both subjective and objective evaluation standards.
ISSN:0196-2892
1558-0644
DOI:10.1109/TGRS.2018.2825459